Centrifugal Pumps are classifies into three general categories:
Radial Flow – a centrifugal pump in which the pressure is developed wholly by centrifugal force.
Mixed Flow – a centrifugal pump in which the pressure is developed partly by centrifugal force and partly by the lift of the vanes of the impeller on the liquid.
Axial Flow – a centrifugal pump in which the pressure is developed by the propelling or lifting action of the vanes of the impeller on the liquid.